In Hebrew, an expression inteded to express refusal to perform an action, and question the ligitemacy of the request.
He : You need to pay another 50 dollars extra

Me : why who died ?!?!?!?!
by Yanir March 14, 2005
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A phrase used to denote a name which the speaker has forgotten... usually the tag for someone else to help him or her out on the name. Similar in meaning to whatzis.
You, know that new kid... um... who-di-do. Whatzis name?
by Ryan Skipow May 14, 2005
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1. A common response when getting a text from an unknown number. Can be used even if your phone isn't new.
2. Using the above tactic to belittle someone you do, in fact, know.
3. A title of a diss track from an episode of You're The Worst.
"hey i'm in town tonight! let's hit the clubs"
"new phone who dis?"

"i'm pregnant"
"uhhhh...new phone who dis?"

"Did you see last night's You're The Worst? My favorite part was when Sam rapped 'new phone who is.'"
"Such a great scene. We've all been there amirite?"
by suddenvalley November 16, 2015
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When a person asks you a question you don't want to answer you say "new phone, who dis" to avoid answering. From vine Wellington Boyce.
Side chick: babe

You: Wuts up ?
Side chick: I love you;)
You: new phone, who dis?
Side chick: what!?
You: NEW PHONE, WHO DIS!? NEW PHONE, WHO DIS!?
by jutn July 7, 2015
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Slang phrase used on text to avoid conversations with:
1. Someone you owe money to.

2. An Ex lover.
3. Nagging wife.
4. Someone you embarrassed yourself to.
5. Annoying boss.
6. Nagging wife again
Landlord : Have you paid your rent?
Tenant : New phone who dis?
by Laquisha DeeVa January 9, 2018
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When your new hairdo is so damn fire that you don't recognize the little people anymore.
Commoner: hey what's good?
You: New hair, who dis?
by B-Radley R-man August 4, 2021
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A polite way to say fuck off when approached with a text containing a bad idea.
Group chat: Anyone up for a run friday night?
Member: New phone, who dis?
by cvec22 May 6, 2019
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